CN208076082U - Pressure sensor - Google Patents

Pressure sensor Download PDF

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Publication number
CN208076082U
CN208076082U CN201721737357.3U CN201721737357U CN208076082U CN 208076082 U CN208076082 U CN 208076082U CN 201721737357 U CN201721737357 U CN 201721737357U CN 208076082 U CN208076082 U CN 208076082U
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CN
China
Prior art keywords
pressure sensor
magnetic core
supporter
vibrating diaphragm
vessel
Prior art date
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Active
Application number
CN201721737357.3U
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Chinese (zh)
Inventor
赖勇
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Illinois Tool Works Inc
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Illinois Tool Works Inc
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Filing date
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
    • G01L7/08—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type
    • G01L7/082—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type construction or mounting of diaphragms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G01L19/0038—Fluidic connecting means being part of the housing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/142—Multiple part housings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/147—Details about the mounting of the sensor to support or covering means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/148—Details about the circuit board integration, e.g. integrated with the diaphragm surface or encapsulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/007—Transmitting or indicating the displacement of flexible diaphragms using variations in inductance

Abstract

This application discloses a kind of pressure sensors, including：Shell, the shell include upper shell and lower housing, and the setting of the upper shell and the lower housing to form a vessel between the upper shell and the lower housing；Vibrating diaphragm, the vibrating diaphragm setting are separated into upper vessel and lower vessel between the upper shell and the lower housing, and by the vessel；Magnetic core, the magnetic core are moved with the movement of the vibrating diaphragm；The vibrating diaphragm includes supporter and the thin skin around the supporter, and the thin skin extends from the edge of the supporter；The magnetic core is carried by the supporter.Pressure sensor in the application has the advantages that small and is easily installed and dismantles.

Description

Pressure sensor
Technical field
This application involves a kind of sensors, are particularly used for the pressure sensing of the operating parameter of detection household electrical appliance Device.
Background technology
In some household electrical appliance such as washing machine, some operating parameters should be sensed in use, to ensure household The correct operation of electric appliance, such as to sense the distribution consistency degree of the clothes to be washed in washing machine basket, and the pressure of supply water and/ Or water level, etc..
The pressure of water sensing and/or water level use pressure sensor in the prior art.Pressure sensor generally comprises rigidity Shell, the outer rigid housing accommodate the deformable film sensitive to air pressure；Pressure sensor further includes magnetic core and coil, the magnetic core by Ferromagnetic material is made and generates movement by operationally coordinating with the film with the deformation in response to film；The coil is fixed To the shell, the movement in response to the magnetic core makes coil form variable inductance inductor.The coil and capacitance group An oscillating circuit is synthesized, to the variation of the position in response to the magnetic core, the oscillating circuit can generate frequency variation Electric oscillation signal.In use, the frequency of oscillation variation of electric signal can be by the SEA LEVEL VARIATION institute in household electrical appliance cylinder or basket It is caused.
However, the design of existing sensor is not without defect, for example, in order to reach its qualified index, existing biography Sensor mechanical structure so that its is relatively large sized.Since household electrical appliance volume has the trend of microminiaturization, this pressure sensing Device inconvenience is installed in the confined space of household electrical appliance.In addition, the arrangements of components of existing sensor internal is unsuitable for reducing sensing The size of device.And existing household electrical appliance have higher requirement to the convenience of the installation and removal of sensor.
Utility model content
The first purpose of the application is to solve problem above by a kind of improved pressure sensor of offer.
According to the application's in a first aspect, this application provides a kind of pressure sensors, including：Shell, the shell packet Upper shell and lower housing are included, the setting of the upper shell and the lower housing makes shape between the upper shell and the lower housing At a vessel；Vibrating diaphragm, the vibrating diaphragm setting are separated between the upper shell and the lower housing, and by the vessel Vessel and lower vessel；Magnetic core, the magnetic core are moved with the movement of the vibrating diaphragm；The vibrating diaphragm includes supporter and surrounds described The thin skin of supporter, the thin skin extend from the edge of the supporter；The magnetic core is carried by the supporter.
In a first aspect, the pressure sensor further includes coil, the coil is fixed on the shell according to above-mentioned, The coil and the magnetic core cooperating, to form variable inductance inductor.
According to above-mentioned in a first aspect, there is the outer profile of the supporter supporter outer diameter, the magnetic core to have outside magnetic core Diameter, the supporter outer diameter are set equal to, are slightly larger than or are slightly less than the magnetic core outer diameter；Or the supporter outer diameter and institute The ratio between magnetic core outer diameter is stated between 0.85-1.6.
According to above-mentioned in a first aspect, the magnetic core is contacted with the supporter.
According to above-mentioned in a first aspect, the thin skin arches upward from the edge of the supporter initially towards the upper vessel, with Formation is arched upward portion.
According to it is above-mentioned in a first aspect, the vibrating diaphragm include around the thin skin setting sealing margin, the sealing margin It is clamped between the upper shell and the lower housing, hermetically to separate the lower vessel and the upper vessel；Institute It states the described of thin skin and arches upward portion across the edge in the supporter and between the sealing margin.
According to above-mentioned in a first aspect, the thin skin is opened in the junction with the edge of the supporter and the sealing margin Beginning arches upward, with the portion that arches upward described in formation.
According to above-mentioned in a first aspect, it is from the shape put down to arch that the edge of the supporter, which has transition region, the transition region, Transition region on shape and/or the transition region on from thickness to thin thickness.
It is described according to above-mentioned in a first aspect, the pressure sensor further includes the compensation elastomeric element for the vibrating diaphragm Compensation elastomeric element is sandwiched between the lower housing and the vibrating diaphragm.
According to above-mentioned in a first aspect, the compensation elastomeric element is the elasticity being arranged in the supporter lower part of the vibrating diaphragm Stick, the flexible rod are extended downwardly from the supporter and can be contacted with the bottom of the lower housing.
According to above-mentioned in a first aspect, the bottom of the lower housing is equipped with the protrude element of the tubulose upwardly extended, the bullet Property stick be at least partially accommodated in the protrude element, the protrude element around the lower housing bottom on fluid Channel is arranged.
According to above-mentioned in a first aspect, the compensation elastomeric element is counterbalance spring, the counterbalance spring is sandwiched in the branch Between support body and the bottom of the lower housing.
According to above-mentioned in a first aspect, the magnetic core is cylindrical shape；The vibrating diaphragm further includes from the upper surface of the supporter The mounting bar extended；And the magnetic core is sleeved on the mounting bar.
According to above-mentioned in a first aspect, the lower end of the magnetic core is equipped with from the side of magnetic core and outward extends flange；And institute The edge for stating supporter is folded upward to form vessel, and the flange of the magnetic core lower end is received by the vessel, and by described curved The edge barrier of folding its move upwards.
According to above-mentioned in a first aspect, the lower end of the magnetic core is equipped with the recess portion being recessed inwardly from the side of magnetic core；And institute The edge for stating supporter is bent downward to form the vessel, and the magnetic core is received in the vessel, the supporter Edge is engaged with the magnetic core recess portion, and the magnetic core is fixed in the vessel.
According to above-mentioned in a first aspect, the pressure sensor further includes the working spring for the vibrating diaphragm, the work Spring is arranged between the upper shell and the vibrating diaphragm.
According to above-mentioned in a first aspect, the upper shell further includes tubular end, the coil is wrapped in the tubular end Outside, the magnetic core can pass in and out the tubular end with the movement of the vibrating diaphragm.
According to above-mentioned in a first aspect, the pressure sensor further includes the adjusting bolt for adjusting the working spring, The adjusting bolt is arranged at the top of the upper shell.
According to above-mentioned in a first aspect, the upper shell is equipped with through-hole, for the upper vessel to be connected with ambient air； And the lower housing is equipped with connector pipeline, for the lower vessel to be connected to liquid fluid to be measured.
According to above-mentioned in a first aspect, the vibrating diaphragm is integrally formed by elastic material.
According to above-mentioned in a first aspect, the pressure sensor further includes at least one printed circuit board；And lid, the lid Setting on the housing, forms accommodation space, for accommodating at least one printing between the lid and the upper shell Circuit board.
According to it is above-mentioned in a first aspect, at least one printed circuit board each printed circuit board on have it is at least one Capacitance.
According to above-mentioned in a first aspect, the pressure sensor further includes ox head structure, the ox head structure is used for will be described Pressure sensor is detachably fixed to installation and ties.
According to the second aspect of the application, this application provides a kind of pressure sensors, including：Shell, the shell packet Upper shell and lower housing are included, the setting of the upper shell and lower housing to be formed between the upper shell and the lower housing Vessel；Vibrating diaphragm, the vibrating diaphragm are arranged between the upper shell and the lower housing, and by the vessel be separated into upper vessel and Lower vessel, the vibrating diaphragm can be moved in response to the variation of pressure；Lid, lid setting on the housing, the lid and Accommodation space is formed between the upper shell；Connector pipeline, the connector pipeline are in fluid communication with the lower vessel.Wherein, institute Stating pressure sensor, there is length and height, the connector pipeline to prolong along the direction of the length of the pressure sensor It stretches.The lid in the side that connector pipeline extends there is extension, the extension to have extending space, the extending space Connect with accommodation space connection.
According to above-mentioned second aspect, the pressure sensor further includes a printed circuit board, the printed circuit board edge The direction for the length of the pressure sensor is placed, and a part for the printed circuit board is mounted on the accommodation space In, another part extends in the extending space.
According to above-mentioned second aspect, the pressure sensor further includes coil, and the coil is fixed to the upper shell On, the both ends of the coil are connected directly to the printed circuit board.
According to above-mentioned second aspect, at least a piece of chip is installed on the printed circuit board.
According to above-mentioned second aspect, the chip is working sensor chip.
According to above-mentioned second aspect, at least one capacitance is installed on the printed circuit board.
According to above-mentioned second aspect, the end of the extension generally with the end part aligning of the connector pipeline or extension Only slight beyond the end of the connector pipeline.
According to above-mentioned second aspect, plug, the plug and the printed circuit board can be accommodated in the extending space On element electric appliance connection.
According to above-mentioned second aspect, plug is accommodated in the extending space；And a part for the printed circuit board is held It is contained in the accommodation space, the remainder for stating printed circuit board is contained in the extending space.
According to above-mentioned second aspect, the lower housing is equipped with lower snap fastener, the extension of the lid be equipped with The upper snap fastener of the lower snap fastener cooperation.
According to above-mentioned second aspect, there are two opposite planes for the extension tool of the lid, described two opposite Plane is substantially parallel to the direction of the height of the pressure sensor, can be used in when the pressure sensor is installed Positioning.
According to above-mentioned second aspect, the pressure sensor further includes magnetic core, the magnetic core with the movement of the vibrating diaphragm and Movement；The vibrating diaphragm includes supporter and the thin skin around the supporter, and the thin skin extends from the edge of the supporter And go out；And the magnetic core is carried by the supporter.
According to above-mentioned second aspect, there is the outer profile of the supporter supporter outer diameter, the magnetic core to have outside magnetic core Diameter, the supporter outer diameter are set equal to, are slightly larger than or are slightly less than the magnetic core outer diameter；Or the supporter outer diameter and institute The ratio between magnetic core outer diameter is stated between 0.85-1.6.
According to above-mentioned second aspect, the magnetic core is contacted with the supporter.
According to above-mentioned second aspect, the thin skin arches upward from the edge of the supporter initially towards the upper vessel, with Formation is arched upward portion.
According to above-mentioned second aspect, the vibrating diaphragm includes the sealing margin around thin skin setting, the sealing margin It is clamped between the upper shell and the lower housing, hermetically to separate the lower vessel and the upper vessel；With And the described of the thin skin arches upward portion across the edge in the supporter and between the sealing margin.
According to above-mentioned second aspect, the thin skin is opened in the junction with the edge of the supporter and the sealing margin Beginning arches upward, with the portion that arches upward described in formation.
According to above-mentioned second aspect, it is from the shape put down to arch that the edge of the supporter, which has transition region, the transition region, Transition region on shape and/or the transition region on from thickness to thin thickness.
According to above-mentioned second aspect, the vibrating diaphragm is integrally formed.
According to above-mentioned second aspect, the lid is integrally formed.
Compared with prior art, a part for vibrating diaphragm is directly set as the support of bearing magnetic core by the pressure sensor of the application Body meets the demand of the gradual microminiaturization of product using pressure sensor so as to reduce the overall dimensions of pressure sensor.
Moreover, compared with prior art, the arrangements of components of the sensor of the application is suitable for reducing the size of sensor, and It improves to some extent to the convenience of the installation and removal of sensor.
Description of the drawings
Figure 1A is the dimensional structure diagram of one embodiment of the application pressure sensor；
Figure 1B is the sectional view of the short transverse of the pressure sensor in Figure 1A；
Fig. 2A is the sectional view of the short transverse of another embodiment of the application pressure sensor；
Fig. 2 B are the partial enlarged view of Fig. 2A；
Fig. 2 C are the sectional view of the short transverse of another embodiment of the application pressure sensor；
Fig. 2 D are the partial enlarged view of Fig. 2 C；
Fig. 2 E are the sectional view of the short transverse of another embodiment of the application pressure sensor；
Fig. 2 F are the partial enlarged view of Fig. 2 E；
Fig. 3 A and 3B show other two kinds of exemplary approach of supporter bearing magnetic core；
Fig. 4 A-4D show that the magnetic core in the pressure sensor of Figure 1B is installed to the process on vibrating diaphragm；
Fig. 5 A are the exploded view of pressure sensor shown in Figure 1B；
Fig. 5 B are the dimensional structure diagram of adjusting bolt；
Fig. 5 C and Fig. 5 D show the installation process of the shell of pressure sensor and lid shown in Fig. 5 A；
Fig. 6 A show installation diagram of first printed circuit board on the upper shell of pressure sensor in Fig. 5 A；
Fig. 6 B and Fig. 6 C respectively illustrate two examples of the first printed circuit board in Fig. 5 A；
Fig. 6 D and 6E respectively illustrate the circuit structure schematic diagram of the first printed circuit board shown in Fig. 6 B and Fig. 6 C；
Fig. 7 A show tool there are two printed circuit board pressure sensor embodiment in, the dress of two printed circuit boards Figure；
Fig. 7 B show in the pressure sensor embodiment with additional plug-in unit capacitance, the installation diagram of plug-in unit capacitance；
Fig. 8 A are the side view of pressure sensor shown in figure 1A；
Fig. 8 B and 8C are respectively the front view and lateral plan of the ox head structure in Fig. 8 A；
Fig. 9 A and 9B respectively illustrate the pressure sensor in Figure 1A and pass through two kinds on ox head structure installation household electrical appliance Different mounting means；
Figure 10 A and 10B respectively illustrate the stereogram at two visual angles of another embodiment of the application pressure sensor；
Figure 11 shows the sectional view of the short transverse of the pressure sensor in Figure 10 A and 10B；
Figure 12 shows the exploded view of the pressure sensor in Figure 10 A and 10B；
Figure 13 shows the printed circuit board and its mounting structure in Figure 10 A and 10B；
Figure 14 A show the installation diagram of the pressure sensor and plug in Figure 10 A and 10B；
Figure 14 B are the phantom of Figure 13；
Figure 15 shows one embodiment of mounting structure of the pressure sensor in household electrical appliance in Figure 10 A and 10B.
Specific implementation mode
The various specific implementation modes of the application are described below with reference to the attached drawing for constituting this specification part. Although should be understood that in this application using indicate direction term, such as "front", "rear", "upper", "lower", " left side ", " right side " etc. describes the various example features and element of the application, but uses these terms merely for convenience of description herein Purpose, the determination based on the example orientations shown in attached drawing.Since embodiment disclosed in the present application can be according to difference Direction setting, so these indicate directions term be intended only as illustrate and should not be considered as limiting.In the conceived case, Identical or similar reference numeral used herein refers to same or like component.
Figure 1A is the dimensional structure diagram of one embodiment of the application pressure sensor.As shown in Figure 1A, pressure passes Sensor 100 includes shell 105 and covers the lid 101 on shell 105.The side wall of lid 101 is equipped with for by pressure sensor 100 The ox head structure 110 being installed on household electrical appliance.It is additionally provided with signal socket 120 on the side wall of lid 101, is used for pressure sensor The control system for being signally attached to washing machine generated.The bottom of shell 105 is equipped with connector pipeline 102, is used for shell 105 The inner volume fluid communication with wanted sensed level at least partly.The outer profile of shell 105 and lid 101 is cylinder, when So or other suitable shapes.
Figure 1B is the sectional view of the short transverse of the pressure sensor in Figure 1A, wherein the ox head knot being omitted in Figure 1A Structure 110.As shown in Figure 1B, the shell 105 of pressure sensor 100 includes the upper shell 201 to link together and lower housing 202, Vessel is formed between upper shell 201 and lower housing 202, and vibrating diaphragm 210 is accommodated in vessel.Vibrating diaphragm 210 with sealing (or fluid-tight) will be upper Vessel between shell 201 and lower housing 202 is separated into vessel 215 and lower vessel 216.In response to pressure sensor 100 Air pressure change in lower vessel 216, vibrating diaphragm 210 can be deformed.
Upper vessel 215 is connected to atmospheric environment, to be atmospheric pressure in upper vessel 215.It is set on upper shell 201 thus There is through-hole 261 and 262, upper vessel 215 is connected to atmospheric environment.The connector pipeline that lower vessel 216 passes through 202 bottom of lower housing 102 are connected to the cylinder of such as household electrical appliance, to measure the liquid level in cylinder (or water level).Pressure in lower vessel 216 depends on In the height of measured liquid level (or water level).Therefore, in use with the variation of the height of liquid level (or water level), upper vessel 215 and lower vessel 216 in pressure difference also with variation so that vibrating diaphragm 210 is become by between upper vessel 215 and lower vessel 216 Change pressure difference effect, to vibrating diaphragm 210 with pressure difference variation generate deformation.
Upper shell 201 is cup-shaped comprising tubular end 240.Lower housing 202 is also cup-shaped, the bottom of lower housing 202 252 are equipped with the fluid channel 254 being in fluid communication with connector pipeline 102.The upper shell 201 of cup-shaped and the rim of a cup of lower housing 202 are logical Vibrating diaphragm 210 is crossed to be bonded together with sealing (or fluid-tight).
Pressure sensor 100 further includes magnetic core 218 and coil 251, and magnetic core 218 and coil 251 can form variable electricity Motion perception sensor.Magnetic core 218 is made of ferromagnetic material, be arranged in shell 105 and can in response to vibrating diaphragm 210 deformation and It is moved relative to shell 105.Coil 251 is fixed on shell 105, and is coaxially disposed with magnetic core 218 so that when 218 phase of magnetic core When being moved for shell 105, magnetic core 218 can pass in and out space defined by coil 251.To be entered according to magnetic core 218 The inductance of the amount in space defined by coil 251, coil 251 can change.According to the application example, coil 251 It is wrapped in 240 outside of tubular end of upper shell 201.
Vibrating diaphragm 210 includes supporter 212 and the thin skin 213 that is arranged around supporter 212, and thin skin 213 is from supporter 212 (as shown in Figure 4 D) extends at edge 460.Vibrating diaphragm 210 further includes the sealing margin 230 being arranged around thin skin 213, thin skin 213 across between the edge of supporter 212 460 and sealing margin 230.Sealing margin 230 is clamped in 201 He of upper shell Between lower housing 202, upper vessel 215 and lower vessel 216 to be separated with sealing (or fluid-tight).Supporter 212 and sealing strip Edge 230 clamps thin skin 213 from opposite side so that thin skin 213 arches upward upwards, to form the portion 470 (as shown in Figure 4 D) that arches upward.According to The example of the application, thin skin 213 start to arch upward in the junction at edge 460 and sealing margin 230 with supporter 212, With the portion 470 that arches upward described in formation.
Magnetic core 218 is carried by the supporter 212 of vibrating diaphragm 210.Magnetic core 218 can be contacted with supporter 212.With vibrating diaphragm 210 deformation, magnetic core 218 can generate movement so that and magnetic core 218 can pass in and out the tubular end 240 of upper shell 201, to Variable inductance inductor can be formed with the coil 251 for being wrapped in 240 outside of tubular end.212 bearing magnetic core 218 of supporter Mode can there are many.According to embodiment shown in Figure 1B, vibrating diaphragm 210 includes the peace being arranged on the top of supporter 212 Stick 214 is filled, mounting bar 214 is vertically upwardly extended from the top of supporter 212.Magnetic core 218 is cylindrical shape and is sleeved on On mounting bar 214.The thickness of supporter 212 is provided so that the intensity of supporter 212 can support or bearing magnetic core 218. Magnetic core 218 can steadily be carried by supporter 212 as a result,.According to the application example, the thickness of supporter 212 is 2-5 times of the thickness of thin skin 213.Compared with existing pressure sensor, the volume of magnetic core 218 is relatively small in the application, so Even if having enough intensity if the thickness of supporter 212 more relatively thin supporter 212 to support or bearing magnetic core 218.Support The other examples mode of 212 bearing magnetic core 218 of body will be described in detail in conjunction with attached drawing 3A and 3B below.The application directly uses A part for vibrating diaphragm 210 carrys out bearing magnetic core 218, without assembling additional load bearing component, therefore can greatly reduce pressure The size of sensor.
In this application, the shape that thin skin 213 arches upward upwards contributes to vibrating diaphragm 210 to generate deformation.Thin skin 213 is to arch The position setting risen so that the size of pressure sensor 100 reduces.In addition, the position of supporter 212 and construction are also beneficial to The size of sensor reduces.
Specifically, in the embodiment shown in Figure 1B, supporter 212 is discoid, and outer diameter is that (D is in fig. 4d by D It shows).In this application, in order to reduce the size of supporter 212, the outer diameter D of supporter 212 is designed to be slightly larger than, be equal to or Person is slightly less than the outside diameter d (d is shown in fig. 4d) of magnetic core 218, as long as being capable of bearing magnetic core 218.So in magnetic core 218 In the case that outside diameter d is smaller, the outer diameter D of supporter 212 can be designed small as possible.
In addition, the portion 470 that arches upward of thin skin 213 is across between the edge of supporter 212 460 and sealing margin 230 's.The thickness of the main body of supporter 212 be designed as it is thicker than thin skin 213, be because supporter 212 to there is certain intensity to hold Magnetic core 218 is carried, and thin skin 213 will have certain flexibility.The edge 460 of supporter 212 can there are one transition regions 465 (see figure 4D), the transition region 465 can be the transition region in shape from putting down arch, can also be the mistake on from thickness to thin thickness It crosses area or the two haves both at the same time.But the transition region 465 is small as possible, as long as production technology and intensity can be met It is required that.It certainly, in ideal conditions, and can not no transition region.
As a result, in the case where 210 overall diameter of vibrating diaphragm is smaller, the portion 470 that arches upward of thin skin 213, which still can be made, to be compared Greatly, to keep the sensitivity of reaction of the thin skin 213 to pressure change.Because the transition region 465 is smaller, volume is not needed Outer support member supports magnetic core 218 and maintains the portion that arches upward of thin skin 213.In addition, in order to reduce size, and make the portion that arches upward 470 can stably keep its shape to arch upward, the not flat part of transition region 465.
According to the application example, the ratio between the outer diameter D of supporter 212 and the outside diameter d of magnetic core 218 are in 0.85 and 1.6 Between.As an example, the outside diameter d of magnetic core 218 can be between 3-5mm, and the width of the transition region 465 of supporter 212 It can be between 0-1mm.
Pressure sensor 100 further includes being set relatively for the working spring 242 of vibrating diaphragm 210 and with working spring 242 Elastic (or the lower support) component 217 of compensation set.Working spring 242 is sandwiched between upper shell 201 and vibrating diaphragm 210, and is compensated Elastomeric element 217 is sandwiched between lower housing 202 and vibrating diaphragm 210.Working spring 242 is accommodated in the tubular end of upper shell 201 In portion 240.According to the application example, the upper end of working spring 242 abuts the adjusting being inserted into from 240 top of tubular end Bolt 243, and the lower end of working spring 242 abuts magnetic core 218.The depth that tubular end 240 is screwed in by adjusting bolt 243 can To adjust the elasticity in original state of working spring 242.Compensation elastomeric element 217 is configured to through its elastic force or branch Support force offsets the downward spring force that the gravity and working spring 242 of magnetic core 218, vibrating diaphragm 210 and other component are applied, So that even if can be moved linearly by with the variation of pressure if vibrating diaphragm 210 when pressure change starts, and thereby generate The frequency signal of linear change.But the pressure sensor of the application can not also have compensation elastomeric element 217, and not In the case of with compensation elastomeric element 217, for existing pressure sensor, the pressure sensor of the application also can Movement by vibrating diaphragm 210 relatively accurately senses the variation of pressure；This is because magnetic core 218, vibrating diaphragm 210 in the application It is smaller with other component size, so the influence of gravity is also smaller than existing pressure sensor.
According to the application example, compensation elastomeric element 217 is the branch being arranged in vibrating diaphragm 210 as shown in Figure 1B The bottom of support body 212 has flexible or elasticity a flexible rod 217, flexible rod 217 extend downwardly from the bottom of supporter 212 and It is formed.The lower end of flexible rod 217 can be contacted with the bottom 252 of the lower housing 202 of cup-shaped；In this way, working as pressure sensor 100 In use when vertical placement, there is flexible or elasticity flexible rod 217 can generate to magnetic core 218, vibrating diaphragm 210 and other component Generated gravity plays compensating action.Flexible rod 217 can be made into integration with supporter 212.In addition, flexible rod 217 and peace Fill the center alignment of stick 214.Compensation elastomeric element 217 can also be other types of component, this will be detailed in conjunction with Fig. 2 C-2F It introduces.
Magnetic core 218 can be supported on its initial position by flexible rod 217.In the initial position of magnetic core 218, upper vessel 215 It is generally equalized with the pressure in lower vessel 216.With the raising of liquid level, the air pressure in lower vessel 216 gradually increases, from And the gradual increase that upwards pressure that vibrating diaphragm 210 is subject to, cause the thin skin 213 of vibrating diaphragm 210 to move upwards, and thereby drive magnetic Core 218 moves upwards.Moving upwards for magnetic core 218 can be such that working spring 242 is compressed.With the decline of liquid level, lower vessel 216 In air pressure be gradually reduced, working spring 242 spring back so that magnetic core 218 returns to its initial position.
Fig. 2A shows the sectional view of the short transverse of another embodiment of the application pressure sensor.Fig. 2 B are figure The partial enlarged view of the part A of 2A, to show the difference of the embodiment and embodiment shown in Figure 1B.That is, There are different, other place all sames from embodiment shown in Figure 1B in the embodiment only part shown in Fig. 2 B.
Embodiment shown in embodiment shown in Fig. 2A and 2B and Figure 1B the difference is that, the bottom of lower housing 202 252 are equipped with protrude element 253.Fluid channel 254 of the protrude element 253 on the bottom 252 of lower housing 202 is arranged, and from Bottom 252 extends towards lower vessel 216.Protrude element 253 is hollow tubular structure, and can accommodate bullet at least partly Property stick 217.As shown in Figure 2 B, the lower end of flexible rod 217 is inserted into protrude element 253.Fluid channel 254 is set as cross and opens Slot, so as to be used to support the bottom end of flexible rod 217.The height of protrude element 253 is set as moving up and down in flexible rod 217 Stroke in, flexible rod 217 is partly housed within always in protrude element 253, without from wherein deviating from, so that bullet Property stick 217 can be moved according to desirable track.
The protrude element 253 that flexible rod 217 can be accommodated at least partly by setting, can keep pressure sensor The consistency of 100 component assembling.This is because the position by limiting flexible rod 217, enables to each assembling pressure to pass When sensor 100, the initial makeup location of magnetic core 218 reaches consistent, and when the initial makeup location of magnetic core 218 is consistent so that Magnetic core 218 and the relative position of coil 251 are consistent, so that being generated by the oscillating circuit that magnetic core 218 influences initial Frequency is consistent, to keep the adjusting of pressure sensor 100 more convenient.Further, since 253 phase of protrude element can be limited For the position of tubular end 240, therefore magnetic core 218 can be easily right with the coil 251 being wrapped on tubular end 240 It is accurate.And when vibrating diaphragm moves up and down, the axial movement path of magnetic core 218 will not deflection, to further increase pressure sensing The measurement accuracy of device 100.
Fig. 2 C show the sectional view of the short transverse of another embodiment of the application pressure sensor.Fig. 2 D are figure The partial enlarged view of the part B of 2C, to show the difference of the embodiment and embodiment shown in Figure 1B.That is, There are different, other place all sames from embodiment shown in Figure 1B in the embodiment only part shown in Fig. 2 D.
As illustrated in figs. 2 c and 2d, in this embodiment, compensation elastomeric element is the group of flexible rod 217 and counterbalance spring 250 It closes.That is, a counterbalance spring 250 is additionally arranged on the basis of flexible rod 217 shown in Figure 1B.Counterbalance spring 250 is sandwiched in branch Between support body 212 and the bottom 252 of lower housing 202.In the embodiment shown in Fig. 2 C and 2D, it is additionally provided with institute in Fig. 2A and 2B The protrude element 253 on the bottom 252 of lower housing 202 shown, counterbalance spring 250 are sleeved on the outside of protrude element 253.Increase If counterbalance spring 250 can preferably compensate the gravity of magnetic core 218, vibrating diaphragm 210 and other component, in lower vessel When air pressure in 216 starts variation, frequency signal exports linearly, and increases controllability simultaneously.
Fig. 2 E and 2F show the sectional view of the short transverse of another embodiment of the application pressure sensor 100.Figure 2F is the partial enlarged view of the C portion of Fig. 2 E, to show the difference of the embodiment and embodiment shown in Figure 1B.Also It is to say, there are different, other place all sames from embodiment shown in Figure 1B in the embodiment only part shown in Fig. 2 F.
As illustrated in figures 2 e and 2f, in this embodiment, compensation elastomeric element is counterbalance spring 250, and counterbalance spring 250 is pressed from both sides Between supporter 212 and the bottom 252 of lower housing 202.One end of counterbalance spring 250 is connected to the bottom of supporter 212, separately One end is connected to the bottom 252 of lower housing 202.The center of counterbalance spring 250 is aligned with the center of mounting bar 214, counterbalance spring 250 effect is identical as the effect of flexible rod in Figure 1B 217, and this will not be repeated here.
It should be noted that as shown in Figure 1B, Fig. 2A, Fig. 2 C and Fig. 2 E, in use, the pressure in these embodiments passes Sensor 100 perpendicular to or substantially perpendicular to the direction on ground to install.
Fig. 3 A and 3B show other two kinds of exemplary approach of 212 bearing magnetic core 218 of supporter.
In the exemplary approach shown in Fig. 3 A, magnetic core 218 is placed on the top of supporter 212, and is consolidated by supporter 212 It is fixed.Specifically, the top of supporter 212 is equipped with vessel 325, magnetic core 218 is 44 at least partially received in the vessel 325 In.Vessel 325 is folded upward at by the edge 320 of supporter 212 and is formed.The lower end of magnetic core 218 is equipped with from its lateral surface and protrudes Flange 321, flange 321 can be around magnetic core 218 periphery extend circumferential flange.As shown in Figure 3A, edge 320 is by two Secondary bending forms hook-type to the edge 320 of bending.The lower end of magnetic core 218 can be connect together with flange 321 by vessel 325 It receives, and flange 321 is inserted into 320 the formed hook-type of edge of bending, to stop magnetic core by the edge 320 of bending 218 move upwards.For using the pressure sensor of the exemplary approach of 212 bearing magnetic core of supporter shown in Fig. 3 A, It can not use compensation elastomeric element, using elastomeric element is compensated, may be used elastic shown in Figure 1B Counterbalance spring shown in Fig. 2 E and 2F may be used in stick, can also use flexible rod and counterbalance spring phase shown in Fig. 2 C and 2D The mode of combination.
In the exemplary approach shown in Fig. 3 B, magnetic core 218 is positioned over 212 bottom of supporter, and is consolidated by supporter 212 It is fixed.Specifically, the bottom of supporter 212 is equipped with vessel 332, magnetic core 218 is 44 at least partially received in vessel 332.Hold Chamber 332 is bent downward by the edge 333 of supporter 212 and is formed, and be arranged to generally can be by magnetic core 218 for vessel 332 It is fully received within wherein.The lower end of magnetic core 218 is equipped with the recess portion 330 being recessed inwardly from the side of magnetic core 218, the end at edge 333 Portion is protruded towards vessel 332, for coordinating with recess portion 330, to which magnetic core 218 will be fixed in vessel 332.For using For the pressure sensor of the exemplary approach of 212 bearing magnetic core of supporter shown in Fig. 3 B, compensation elasticity can not be used Counterbalance spring shown in Fig. 2 E and 2F may be used using elastomeric element is compensated in component.As previously mentioned, In the case of without compensation elastomeric element, for existing sensor, the pressure sensor of the application can also lead to The movement for crossing vibrating diaphragm 210 carrys out the more accurate variation for sensing pressure, because of the magnetic core 218, vibrating diaphragm 210 in the application and other portions Part size is smaller, so the influence of gravity is also smaller than existing pressure sensor.
In the embodiment shown in Fig. 3 A and 3B, the outer profile of supporter 212 has outer diameter D, and the outer diameter D of outer profile is slightly More than the outside diameter d of magnetic core 218.The outer diameter D of the outer profile of supporter 212 is arranged smaller, as long as supporter 212 can be steadily Bearing magnetic core 218.It is crossed in pressure sensor diametric(al) thus, it is possible to increase the thin skin 213 of vibrating diaphragm 210 as possible Distance so that thin skin 213 can more accurately the variation of response pressure and move, and thereby make thin skin 213 movement Generated frequency signal has better linear response.
Fig. 4 A-4D show that magnetic core 218 is installed on vibrating diaphragm 210 in the embodiment of pressure sensor shown in Figure 1B One embodiment.Wherein, the three-dimensional structure diagram of magnetic core 218 that Fig. 4 A show vibrating diaphragm 210 and are also not mounted on vibrating diaphragm 210, Fig. 4 B show the sectional view for the original state that magnetic core 218 is installed on vibrating diaphragm 210, and Fig. 4 C and 4D show that magnetic core 218 is pacified It is attached to the stereogram and sectional view of the end-state on vibrating diaphragm 210.Fig. 4 A-4D, which are shown, a kind of easily to be installed magnetic core 218 Illustrative methods onto vibrating diaphragm 210.In order to which magnetic core 218 to be conveniently mounted on vibrating diaphragm 210, in the mounting bar of vibrating diaphragm 210 214 are equipped with removable extension 302.
Specifically, as shown in Figure 4 A, magnetic core 218 is also not installed on vibrating diaphragm 210.It is set on the mounting bar 214 of vibrating diaphragm 210 There are the protruding portion 301 of diameter overstriking, 301 top of protruding portion to be additionally provided with one section of extension 302.Extension 302,301 and of protruding portion Mounting bar 214 and vibrating diaphragm 210 are made into integration by elastic material, and elastic material is, for example, rubber material or flexible plastics Material.Extension 302 is only used for installation magnetic core 218, and after magnetic core 218 is installed in place, extension 302 will be removed, such as It is cut off.301 top of protruding portion is equipped with inclined shoulder 305, and the diameter of shoulder 305 is gradually reduced upwards, until and extension 302 is identical.The lower part of protruding portion 301 is generally cylindrical.When installing magnetic core 218, magnetic core 218 is sleeved on extension first On 302, so that magnetic core 218 is moved down along extension 302 and cross protruding portion 301.Since the diameter of protruding portion 301 is big The diameter of mounting bar 214 below protruding portion 301, thus magnetic core 218 stopped by protruding portion 301 and cannot be from mounting bar 214 Abjection.
In initial mounting state as shown in Figure 4 B, magnetic core 218 is installed in place, but also not on mounting bar 214 Extension 302 is removed from mounting bar 214.
But in the final installation condition shown in Fig. 4 C and 4D, it can be seen that extension 302 is from mounting bar 214 It is removed.It should be noted that extension 302 as shown in Figure 4 A, protruding portion 301 and 214 structure of mounting bar are suitable for this Shen Please in pressure sensor 100 because the magnetic core 218 of sensor 100 is to directly support or be carried on supporter in the application On 212.
Compared with pressure sensor in the prior art, the pressure sensor of the application is directly by a part for vibrating diaphragm 210 It is set as the supporter of bearing magnetic core, so as to reduce the overall dimensions of pressure sensor, meets the production using pressure sensor The demand of the gradual microminiaturization of product.In addition, the shell of supporter on the vibrating diaphragm of the pressure sensor of the application in pressure sensor Diametric(al) on size be also provided with smaller, can also further decrease the overall dimensions of pressure sensor in this way.In pressure In sensor, the diameter D of the outer profile of lower housing 202L(DLShown in Fig. 2 E) it is typically larger than the upper of upper shell 201 and lid 101 The diameter in portion, therefore the diameter of the outer profile of lower housing 202 determines the size of the outer diameter dimension of pressure sensor.With it is existing The size of pressure sensor compare, the diameter D of the lower housing 202 of the pressure sensor of the applicationLSize can be reduced to it is existing The 50-60% of the diameter of the lower housing of some pressure sensors.In addition, compared with the size of existing pressure sensor, The pressure sensor of the application can be reduced to the 40- of the size of existing pressure sensor short transverse in the size of short transverse 50%.Therefore the pressure sensor overall dimensions of the application are significantly less than the overall dimensions of existing pressure sensor.
Fig. 5 A show the exploded view of pressure sensor shown in Figure 1B.As having been combined in front Figure 1B introduced, The upper shell 201 and lower housing 202 of pressure sensor 100 are bonded together to form shell 105 after, lid 101 is covered in shell 105 On.Vibrating diaphragm 210 is clipped between upper shell 201 and lower housing 202, and magnetic core 218 is carried by the supporter 212 of vibrating diaphragm 210, coil 251 are wrapped in outside the tubular end 240 of upper shell 201.Working spring 242 is contained in the tubular end 240 of upper shell 201 Portion, adjusting bolt 243 are used to adjust the elasticity in original state of working spring 242.
Other than component mentioned above, as shown in Figure 5A, pressure sensor 100 further includes being carried by upper shell 201 The first printed circuit board 410, the first printed circuit board 410 is accommodated in the vessel 106 that lid 101 and shell 105 are formed.On The tubular end 240 of shell 201 is equipped with mounting base 420, and the first printed circuit board 410 is mounted in mounting base 420.First print Printed circuit board 410 is equipped with capacitance 630.Mounting base 420 is arranged around tubular end 240, and the top of tubular end 240 is by bolt 243 seal together with bolt fixing glue 402.
Fig. 5 B are the dimensional structure diagram of adjusting bolt.As shown in Figure 5 B, the top of adjusting bolt 243 be equipped be suitable for The recess portion 401 of adjusting tool cooperation, the shape of recess portion can be triangle, can also be other shapes.It can using the tool of adjusting To change the depth that adjusting bolt 243 enters the tubular end 240 of upper shell 201, exist so as to adjust working spring 242 The elasticity of original state.
Fig. 5 C and Fig. 5 D show the installation process of shell 105 and lid 101.When the upper shell 201 and lower housing in Fig. 5 A 202 are bonded together forms 105 axis of shell later, and the first printed circuit board 410 is to be located at 105 outside of shell.In order to incite somebody to action First printed circuit board 410 seals, and needs to cover lid 101 on shell 105.Signal socket 120 on lid 101 can be by first Printed circuit board 410 is connected with the control system of household electrical appliance.Signal socket 120 not only has the lateral wall from lid 101 outside The part 521 of extension, and have from the part that the madial wall of lid 101 extends internally 523 (also reference can be made to Figure 1B).
Due to the small volume of pressure sensor 100,101 inner space of lid is also very narrow, therefore when shell 105 and lid When 101 assembly are completed, the connecting pin 412 of the first printed circuit board 410 that shell 105 is carried and signal socket 120 are from lid The part 523 that 101 madial wall extends internally is overlapped (such as Figure 1B at least partly on the axial direction of pressure sensor 100 It is shown).It therefore, cannot be directly by the first printed circuit board 410 on shell 105 when lid 101 to be assembled on shell 105 Connecting pin 412 be aligned with the signal socket 120 of lid 101 after lid 101 is covered on shell 105.For this purpose, in assembly the application Pressure sensor 100 lid 101 and shell 105 when, need first so that on signal socket 120 and shell 105 on lid 101 The position of the connecting pin 412 of first printed circuit board 410 mutually staggers (such as by the first printed circuit board on shell 105 410 connecting pin 412 rotates by a certain angle counterclockwise relative to the signal socket on lid 101), then shell 105 is inserted into and is covered In 101, after being inserted into appropriate location, shell 105 is rotated into (such as rotating clockwise) relative to lid 101, until lid 101 Buckle structure set by upper end of the lower end with shell 105 is mutually clamped together, at this time the signal socket in rigid cap 101 120 is be overlapped at least partly with 412 position of connecting pin of the first printed circuit board 410 on shell 105.Shell 105 and lid State after the completion of 101 assembly is as shown in Figure 5 D.
Fig. 6 A show dress of first printed circuit board 410 on the upper shell 201 of pressure sensor 100 in Fig. 5 A Figure.As shown in Figure 6A, the first printed circuit board 410 is mounted on the mounting base on the tubular end 240 of upper shell 201 On 420.Mounting base 420 is wound around the upper surface of coil 251 on tubular end 240.Mounting base 420 and the first printed circuit Plate 410 does not cover the top of tubular end 240.First printed circuit board 410 is equipped with the first pin 611 and the second pin 612, and it is equipped with the first ear 621 and the second ear 622 in corresponding both sides.First pin 611 and the second pin 612 are inserted Enter into mounting base 420.Two ends 605 and 606 of coil 251 are respectively wound around the first ear 621 and the second ear 622 On, and with the circuit communication on the first printed circuit board 410.
Fig. 6 B and Fig. 6 C respectively illustrate two examples of the first printed circuit board of the pressure sensor 100 in Fig. 5 A. Fig. 6 D and 6E respectively illustrate the circuit structure schematic diagram of the first printed circuit board shown in Fig. 6 B and Fig. 6 C.
In two examples shown in 6B and Fig. 6 C, with the capacitance that quantity is different on the first printed circuit board, to meet Different demands.Wherein, it is set on the first printed circuit board 410 shown in Fig. 6 B there are one capacitance 630, with the formation of coil 251 Parallel circuit.And the first printed circuit board 410 shown in Fig. 6 C is equipped with 2 capacitances 631 and 632, the two capacitances connect it It is in parallel with coil 251 again afterwards.The capacitance is, for example, resonant selecting frequency capacitance.
Fig. 6 D show the circuit structure schematic diagram of the first printed circuit board in Fig. 6 B.As shown in Figure 6 D.Pressure sensing Coil 251 inside device 100 is equivalent to the inductance L 251 in figure.The difference of water level causes the magnetic core position inside coil 251 to be sent out It is raw to change, it also changes therewith to the inductance value of inductance L 251.Inductance L 251 and capacitance C 630 constitutes frequency-selecting net in parallel Network, the frequency-selecting in parallel that integrated circuit U1 641, U2 642 are constituted as positive feedback amplifier with inductance L 251 and capacitance C 630 Network is in parallel, and integrated circuit U3 643 is used for waveform shaping, and to export square-wave signal, the frequency of circuit output is
Fig. 6 E show the circuit structure schematic diagram of the first printed circuit board in Fig. 6 C.As illustrated in fig. 6e, pressure sensing Coil 251 inside device 100 is equivalent to the inductance L 251 in figure.Inductance L 251 and capacitance C1 631, C2 632 constitute standard Colpitts oscillation circuit, integrated circuit U1 651 is to make as sign-changing amplifier is in parallel with Colpitts oscillation circuit With integrated circuit U2 652 is used for waveform shaping, and to export square-wave signal, the frequency of circuit output is：
As an example, can multiple integrated circuits be set on the household electrical appliance using the application pressure sensor The components such as U1, U2, U3 constitute the circuit structure in such as Fig. 6 D, Fig. 6 E, but can also be arranged on pressure sensor multiple integrated Circuit U 1, U2, U3 constitute the circuit structure in Fig. 6 D, Fig. 6 E such as and directly export sensing signal, and can also be by all capacitances 630,631,632 and other electric elements be arranged using the application pressure sensor household electrical appliance in.
Fig. 7 A show tool there are two printed circuit board pressure sensor 100 embodiment in, two printed circuit boards The installation diagram on upper shell 201 in fig. 5.For pressure sensor shown in Fig. 5 A, two can be arranged wherein Printed circuit board, one of printed circuit board is arranged along the diametric(al) of pressure sensor, and another printed circuit board It is arranged along the short transverse of pressure sensor.As shown in Figure 7 A, two printed circuit boards are respectively the first printed circuit board 410 and second printed circuit board 710.The installation side of first printed circuit board 410 and its mounting means and Fig. 6 A illustrated embodiments Formula is identical.But unlike Fig. 6 A illustrated embodiments, in the embodiment shown in Fig. 7 A, the first printed circuit board 410 First pin 611 and the second pin 612 are arranged longer, are inserted into mounting base in the first pin 611 and the second pin 612 in this way After in 420, the end of the first pin 611 and the second pin 612 can be stretched out from mounting base 420.Second printed circuit board 710 are mounted on the first printed circuit board 410.As shown in Fig. 7 A, the second printed circuit board 710 is equipped with mounting hole 720, uses In the slave peace for the first pin 611 and the second pin 612 that the second printed circuit board 710 is plugged on to the first printed circuit board 410 It fills on the end that seat 420 stretches out so that the second printed circuit board 710 is essentially perpendicular to the first printed circuit board 410.Second This mounting means of printed circuit board 710 takes full advantage of the inner space of lid 101 so that the volume of pressure sensor 100 It can reduce as much as possible.In addition, in the case where not needing the second printed circuit board 710, the second printed circuit board 710 can be with Easily disassembled from the first printed circuit board 410.Second printed circuit board 710 is equipped at least one circuits IC and outside The diagnostic circuit function of extension may be implemented in the chip 703 connect, the circuit on chip 703.
Fig. 7 B show in the pressure sensor embodiment with plug-in unit capacitance, the upper shell of plug-in unit capacitance in fig. 5 Installation diagram on 201.As shown in Figure 7 B, the present embodiment pressure sensor can set there are one outer plugin capacitance 720 (such as Fig. 6 D institutes The capacitance 630 shown), there are two pins for the tool of outer plugin capacitance 720, are inserted into the first pin 611 of the first printed circuit board 410 respectively With the second pin 612 from the end that mounting base 420 is stretched out.Plug-in unit capacitance 720 is also to be vertically set on mounting base 420 as a result, Side, to take full advantage of the inner space of lid 101.Plug-in unit capacitance 720 is, for example, bulbous plug capacitance.
If a capacitance can be installed on the first printed circuit board 410 as an embodiment without using outer plugin capacitance (capacitance 630 as shown in Fig. 6 B and 6D)；As another embodiment, two capacitances can be installed on the first printed circuit board 410 (capacitance 631 and 632 as shown in Fig. 6 C and 6E).
Fig. 8 A are the side view of pressure sensor 100 shown in figure 1A.As shown in Figure 8 A, pressure sensor 100 includes Ox head structure 110, for pressure sensor 100 to be detachably fixed to household electrical appliance.The setting of ox head structure 110 is being covered On 101 side wall.
Fig. 8 B and 8C are respectively the front view and lateral plan of the ox head structure 110 in Fig. 8 A.Such as Fig. 8 B and 8C institutes Show, ox head structure 110 is equipped with main body 801, the head 823 that is upwardly extended from the top of main body 801, and from the top of main body 801 Portion upwardly extends and is located at the elastic arm 802,804 of 823 both sides of head.Elastic arm 802,804 is symmetrically set relative to head 823 It sets.Elastic arm 802,804 can be relative to 801 flexible deformation of main body.Elastic arm 802,804 is in the outside point far from head 823 The shoulder 821,822 that She You do not protrude." ox head " shape structure is collectively formed in head 823, elastic arm 802,804 and main body 801.Head Top of the top in portion 823 less than the elastic arm 802,804 of both sides.The back side on head 823 is equipped with linking arm 815, is used for ox Header structure 110 links together with lid 101.Linking arm 815 can also extend downwardly into the back side of main body 801 from head 823.Such as Shown in Fig. 5 A, the top of linking arm 815 is equipped with groove 818.
As shown in Figure 8 C, the front of elastic arm 802,804 is respectively equipped with elastic bumps 806,808.Elastic bumps 806,808 With inclined lower face 809,811, and can be with the upper surface 810,812 of plane.
Fig. 9 A and 9B respectively illustrate the pressure sensor in Figure 1A and are installed on household electrical appliance by ox head structure 110 Two different mounting means.
As shown in Figure 9 A, pressure sensor 100 is mounted on home electronic panel 900, and home electronic panel 900 is equipped with The elastic arm 802,804 of mounting structure 910, ox head structure 110 can be matched with mounting structure 910 by pressure sensor 100 It is fixed on home electronic panel 900.Mounting structure 910 includes the packed slot 903 being arranged on panel 900, and is located at A pair of of stop arm 901,902 of 903 top of slot.
When pressure sensor 100 is installed to panel 900, the main body 801 of ox head structure 110 is first inserted into slot 903 In, when 801 lower end of main body is inserted to 903 bottom of slot, elastic bumps 806 on the elastic arm 802,804 of ox head structure 110, 808 upper surface 812,810 can just abut the bottom surface of the stop arm 901,902 of mounting structure 910.Thus ox head structure 110 are fixed in mounting structure 910.If pressure sensor 100 disassembled from panel 900, needing will be elastic Arm 802,804 is moved to the direction far from panel, so that the upper surface 812,810 of elastic bumps 806,808 is detached from mounting structure Then 910 stop arm 901,902 again extracts ox head structure 110 from slot 903 upwards.
As shown in Figure 9 B, home electronic panel 900 is equipped with mounting structure 920, and the head 823 of ox head structure 110 can It is matched with mounting structure 920 and pressure sensor 100 is fixed on home electronic panel 900.Mounting structure 920 includes bag Plug slot 913.Mounting structure 920 further includes the stopper projection 918 for being located at the top of slot 913, the setting of stopper projection 918 from In the stop arm 916 that panel 900 extends.
When pressure sensor 100 is installed to panel 900, the main body 801 of ox head structure 110 is first inserted into slot 913 In, when 801 lower end of main body is inserted to 913 bottom of slot, the top on the head 823 of ox head structure 110 can just abut installation The bottom surface of the stopper projection 918 of structure 920.Thus ox head structure 110 is fixed in mounting structure 920.If by pressure Sensor 100 is disassembled from panel 900, is needed stop arm 916 to the direction on the head 823 far from ox head structure 110 It is mobile, so that the top on head 823 is detached from the bottom surface of the stopper projection 918 of mounting structure 920, then again by ox head structure 110 It is extracted from slot 903 upwards.
Fig. 9 A and Fig. 9 B respectively illustrate installation panel 900 it is parallel with the short transverse of pressure sensor 100 with it is vertical The mounting means of two kinds of situation lower pressure sensors 100.Due to being provided with ox head structure 110, the pressure sensor 100 of the application The different installation requirements of household electrical appliance can be applicable in, and the installation and removal of pressure sensor are also more convenient.
In the embodiment of pressure sensor above-mentioned, it is used for the fluid communication of pressure sensor 100 and liquid level to be measured Connector pipeline 102 be to extend substantially along the short transverse of pressure sensor.And in some applications, household electrical appliance Installation space has the short transverse of pressure sensor a larger limitation, but to the length direction of pressure sensor (or diameter Direction) limitation it is more tolerant；That is, in some applications it may be desirable to pressure sensor is in flat pattern.The one of this application A example is exactly the rotary drum washing machine for being increasingly intended to miniaturization.For this purpose, according to another embodiment, present invention also provides one Kind of pressure sensor 1100 (as shown in Figure 10 A, 10B, 11 and 12), in this embodiment, connector pipeline 102 are generally edges The direction extension of the length L of pressure sensor 1100, to reduce the size in 1100 short transverse of pressure sensor.
It should be noted that from Figure 10 A, 10B, 11 and 12 as can be seen that the operation principle and 1A of pressure sensor 1100 As pressure sensor shown in 1B 100, the installation site of machine work component and mutual cooperation in pressure sensor 1100 As pressure sensor 100；In pressure sensor 1100 electronic working component connection and cooperate with Fig. 6 D shown in As oscillating circuit 640.So the part in pressure sensor 1100 as pressure sensor 100, the application is no longer heavy Multiple description.From Figure 10 A, 10B, 11 and 12 as can be seen that pressure sensor 1100 and the main distinction of pressure sensor 100 are The design of lid and the setting of printed circuit board.
Specifically, Figure 10 A and 10B respectively illustrate the vertical of two visual angles of the embodiment of above-mentioned pressure sensor 1100 Body figure, wherein Figure 10 A are the stereograms looked over from the top of pressure sensor 1100, and Figure 1B is from pressure sensor 1100 The stereogram that looks over of bottom.As illustrated in figs. 10 a and 10b, pressure sensor 1100 including shell 1105 and is mounted on shell On lid 1101.The lower part of shell 1105 is equipped with connector pipeline 102.Length of the connector pipeline 102 substantially along pressure sensor The direction for spending L (as Figure 11 is indicated) extends.
Figure 11 shows the sectional view in the direction of the height H of the pressure sensor in Figure 10 A and 10B；Figure 12 shows figure The exploded view of pressure sensor in 10A and 10B.It is similar with the pressure sensor 100 in Figure 1B, as shown in FIG. 11 and 12, pressure The shell 1105 of force snesor 1100 includes upper shell 201 and lower housing 1202, and upper shell 201 is mutually interconnected with lower housing 1202 It connects to form vessel.The setting of vibrating diaphragm 210 is separated into upper vessel between upper shell 201 and lower housing 1202, and by the vessel 215 and lower vessel 216.Connector pipeline 102 is in fluid communication with lower vessel 216.The lid 1101 that is arranged above upper shell 201 with Accommodation space 106 is formed between upper shell 201.The upper shell 201 of pressure sensor 1100 and construction, the vibrating diaphragm of lower housing 1202 The setting of 210 construction, magnetic core 218, coil 251 and working spring 242 etc. is corresponding with the pressure sensor 100 in Figure 1B Component is roughly the same, and this will not be repeated here.Therefore, pressure sensor 1100 is as pressure sensor 100, it may have smaller ruler It is very little.Unlike the pressure sensor 100 in Figure 1B, the connector pipeline 102 of pressure sensor 1100 is substantially along pressure The direction of the length L of sensor extends.
In addition, the lid 1101 of pressure sensor 1100 has extension 1108 in the side that connector pipeline 102 extends, prolong Extending portion 1108 has extending space 1109, the accommodation space formed between extending space 1109 and lid 1101 and upper shell 201 106 connections connect.Extension 1108 is integrally formed with lid 1101.On the direction of the length L of pressure sensor 1101, lid 1101 The end 1107 of extension 1108 be aligned or extend only slight beyond connector pipeline 102 with the end 1103 of connector pipeline 102 End 1103, as long as not influencing the installation of the length direction of pressure sensor 1100.
The lower housing 1202 of pressure sensor 1100 is equipped with lower snap fastener 1282, and the extension of lid 1101 is equipped with under The upper snap fastener (not shown) that snap fastener 1282 coordinates.Lower snap fastener 1282 is matched with the upper snap fastener of lid 1101 The extension 1108 of lid 1101 can be connected with lower housing 1202.
Pressure sensor 1100 further includes a printed circuit board 1410, and printed circuit board 1410 is along pressure sensor The direction of 1100 length L is placed, and a part for printed circuit board 1410 is mounted in the accommodation space 106, another It extends partially into the extending space 1109.It is similar with the printed circuit board 410 in Figure 1B, the print of pressure sensor 1100 Printed circuit board 1410 is also mounted in the mounting base 420 on the tubular end 240 of upper shell 201.Mounting base 420, which is located at, to twine The upper surface of the coil 251 being wound on tubular end 240.
With being only located at lid 101 compared with the printed circuit board 410 in the accommodation space 106 between shell 105 in Figure 1B, 1410 length of printed circuit board in the present embodiment increases, the accommodation space 106 1 between lid 1101 and upper shell 201 The straight extension 1108 for extending to lid 1101 is formed by extending space 1109, therefore, the printed circuit board in the present embodiment 1401 areas with bigger carry out receiving element.And although printed circuit board 1410 is lengthened out and lid 1101 is equipped with extension 1108, but the installation of this length direction that can't increase pressure sensor 1101.Printed circuit board 1410 is lengthened out and covers 1101 take full advantage of the space of 102 top of connector pipeline to extend the area of printed circuit board 1410 equipped with extension 1108. When there is printed circuit board 1410 sufficient area to carry out receiving element, pressure sensor can no longer be needed by increasing by one piece Volume is accommodated along the printed circuit board (such as printed circuit board 710 shown in Fig. 7 A) of the direction of pressure sensor height H setting Outer element.Using the length L along pressure sensor direction be arranged printed circuit board 1410 be more convenient for coil 251 with printing The connection of circuit board 1410, because of the printing electricity that the both ends of coil 251 can be arranged with the direction of the length L along pressure sensor Road plate 1410 is connected directly, without being connected by lead；Such structure reduces cost, easy to produce.Figure 13 shows The connection type of the printed circuit board 1410 and coil 251 in Figure 10 A and 10B is gone out.
As shown in figure 13, two ends 605 and 606 of coil 251 be respectively wound around printed circuit board 1410 from installation On the first pin 611 and the second pin 612 stretched out in seat 420.Chip 1703 is installed on printed circuit board 1410.Chip 1703 be, for example, working sensor chip.Capacitance 630 is also equipped on printed circuit board 1410.It is worth noting that, in addition to institute Show other than chip 1703 and the capacitance 630 at place, other chips, capacitance or other are also equipped on printed circuit board 1410 Electric elements.In addition, lower housing 1202 is additionally provided with supporting rod 1285 near lower snap fastener 1282, printed for Auxiliary support Circuit board 1410.
The advantages of printed circuit board 1410 are arranged in this way is：Be conducive to reduce in the short transverse of pressure sensor 1100 Size；The installation strength of printed circuit board 1410 can be improved；The carrying of 1410 electric elements of printed circuit board can be expanded Amount, to meet the more and more intelligentized requirement of household electrical appliance.
Referring still to Figure 10 A and 10B, opposite plane 1112 and 1114 that there are two the tools of extension 1108 of lid 1101, this Two planes 1112 and 1114 are substantially parallel to the direction of the height H of pressure sensor 1100, can be used in pressure sensor Positioning when 1100 installation.Plane 1112 and 1114 also forms the socket 120 of plug 480 (as shown in figs. 14 a-b).It inserts First 480 connect with the element electric appliance on printed circuit board 1410, are filled for the control in pressure sensor 1100 and household electrical appliance Signal is transmitted between setting.It is worth noting that, the application is provided with the plane 1112 and 1114 as shown in 10A and 10B for pressing Positioning when force snesor 1100 is installed can also be in pressure sensor although this mechanical structure arrangement works well Other positions, for example, along cylindrical housings extend plane for install when positioning, also the protection domain of the application it It is interior.
Figure 14 A show the installation diagram of the pressure sensor and plug in Figure 10 A and 10B；Figure 14 B are that the part of Figure 13 is cutd open View is cut, that removes a parts for the extension 1108 of lid 1101, to show how plug 480 and printed circuit board 1410 are Assembly.As shown in figs. 14 a-b, plug 480 is inserted into the extending space of the extension 1108 of lid 1101 from socket 120 In 1109, plug 480 is equipped with receiving slit 482, for receiving wherein the connecting pin 1412 of printed circuit board 1410.Using It is more convenient for plug 480 and printed circuit board 1410 along the printed circuit board 1410 of the direction setting of the length L of pressure sensor Connection.Further, since extension 1108 is integrally formed with lid 1101, plug 480 is accommodated in the extension 1108 of lid 1101 Preferably plug liquid can be isolated, to enhance the waterproof action to plug 480.Plug 480 is to meet RAST2.5 3P to connect The plug of mouth.
Figure 15 shows one embodiment of mounting structure of the pressure sensor in household electrical appliance in Figure 10 A and 10B. As shown in figure 15, the panel 900 of household electrical appliance is equipped at least two elastic arms 1552 extended from the surface of panel 900 With 1554, the free end of elastic arm 1552 and 1554 is respectively equipped with hook portion 1551 and 1553.Pressure sensor 1100 is mounted on two Between a elastic arm 1552 and 1554, and it is fixed on panel 900 by hook portion 1551 and 1553.Hook portion 1551 and 1553 distances The distance on the surface of panel 900 is set as when surface of the top of the lid 1101 of pressure sensor 1100 against panel 900, Hook portion 1551 and 1553 can just hook pressure sensor 1100 lower housing 1202 bottom.Be additionally provided on panel 900 from Anti-rotation plate 1558 and 1559 that the surface of panel 900 is extended, anti-rotation plate 1558 and 1559 can prolong with lid 1101 Two planes 1112 and 1114 of extending portion 1108 match, and prevent pressure sensor 1100 from being rotated relative to panel 900.In addition, The barrier plate 1556 extended from the surface of panel 900 is additionally provided on panel 900, barrier plate 1556 is for stopping pressure sensing Device 1100 is moved along the surface of panel 900.It is worth noting that, Figure 15 illustrate only the installation of pressure sensor 1100 A kind of example of mode, pressure sensor 1100 can be installed by various modes, for example, can be as shown in Figure 15, Specific mounting structure is set on the panel of household electrical appliance, knot with matching is only set on pressure sensor 1100 Mounting structure can also be arranged on pressure sensor 1100, the face of household electrical appliance is then installed to by the mounting structure for structure On plate.
It should be noted that in this application, vibrating diaphragm 210 is integrally formed, and lid 101,1101 is also integrally formed.It needs It is noted that although the size of pressure sensor 100 and 1100 has and is obviously reduced in the application, by testing repeatedly, Pressure sensor 100 and 1100 has the pressure sensitivity for complying fully with service requirement in the application.
Although the application will be described in the specific implementation mode shown in refer to the attached drawing, but it is to be understood that not Under the background of the spirit and scope of the application introduction, the pressure sensor of the application can be there are many version.This Shen Component in each embodiment and/or structure please can carry out various combinations in the conceived case, this is all the application's Within protection domain.Those of ordinary skill in the art will additionally appreciate different modes to change implementation disclosed in the present application Parameter in example, each falls in the spirit and scope of claims hereof.

Claims (20)

1. a kind of pressure sensor (100,1100), including：
Shell (105,1105), the shell (105,1105) include upper shell (201) and lower housing (202,1202), it is described on The setting of shell (201) and the lower housing (202,1202) make the upper shell (201) and the lower housing (202, 1202) vessel is formed between；
Vibrating diaphragm (210), the vibrating diaphragm (210) are arranged between the upper shell (201) and the lower housing (202,1202), and The vessel is separated into upper vessel (215) and lower vessel (216)；
Magnetic core (218), the magnetic core (218) move with the movement of the vibrating diaphragm (210)；
It is characterized in that：
The vibrating diaphragm (210) includes supporter (212) and the thin skin (213) around the supporter (212), the thin skin (213) extend from the edge (460) of the supporter (212)；And
The magnetic core (218) is carried by the supporter (212).
2. pressure sensor (100,1100) as described in claim 1, it is characterised in that further include：
Coil (21), the coil (21) are fixed on the shell (105,1105), the coil (21) and the magnetic core (218) cooperating, to form variable inductance inductor.
3. pressure sensor (100,1100) as described in claim 1, it is characterised in that：
There is the outer profile of the supporter (212) supporter outer diameter, the magnetic core (218) to have magnetic core outer diameter, the support External diameter is set equal to, is slightly larger than or is slightly less than the magnetic core outer diameter；Or
The ratio between the supporter outer diameter and the magnetic core outer diameter are between 0.85-1.6.
4. pressure sensor (100,1100) as described in claim 1, it is characterised in that：
The magnetic core (218) contacts with the supporter (212).
5. pressure sensor (100,1100) as described in claim 1, it is characterised in that：
The vibrating diaphragm (210) includes the sealing margin (230) around the thin skin (213) setting, sealing margin (230) quilt Be clamped between the upper shell (201) and the lower housing (202,1202), so as to hermetically by the lower vessel (216) with The upper vessel (215) separates；And
The thin skin (213) includes the portion (470) that arches upward, and the portion that arches upward (470) is across the edge in the supporter (212) (460) between the sealing margin (1230).
6. pressure sensor (100,1100) as claimed in claim 5, it is characterised in that：
The thin skin (213) is opened in the junction at edge (460) and the sealing margin (230) with the supporter (212) Beginning arches upward, with the portion that arches upward described in formation (470).
7. pressure sensor (100,1100) as described in claim 1, it is characterised in that further include：
For the compensation elastomeric element (217,250) of the vibrating diaphragm (210), the compensation elastomeric element (217,250) is sandwiched in Between the lower housing (202,1202) and the vibrating diaphragm (210).
8. pressure sensor (100,1100) as claimed in claim 7, it is characterised in that：
The compensation elastomeric element (217,250) is elasticity of the setting in the supporter (212) lower part of the vibrating diaphragm (210) Stick (217), the flexible rod (217) extend downwardly from the supporter (212) and can be with the bottoms of the lower housing (202) (252) it contacts.
9. pressure sensor (100,1100) as described in claim 1, it is characterised in that：
The magnetic core (218) is cylindrical shape；
The vibrating diaphragm (210) further includes the mounting bar (214) extended from the upper surface of the supporter (212)；And
The magnetic core (218) is sleeved on the mounting bar (214).
10. pressure sensor (100,1100) as claimed in claim 5, it is characterised in that：
The vibrating diaphragm (210) is integrally formed by elastic material.
11. a kind of pressure sensor (1100), including：
Shell (1105), the shell (1105) include upper shell (201) and lower housing (1202), the upper shell (201) and The setting of the lower housing (1202) to form vessel between the upper shell (201) and the lower housing (1202)；
Vibrating diaphragm (210), the vibrating diaphragm (210) are arranged between the upper shell (201) and the lower housing (1202), and by institute It states vessel and is separated into vessel (215) and lower vessel (216), the vibrating diaphragm (210) can move in response to the variation of pressure；
It covers (1101), the lid (1101) is arranged on the shell (1105), the lid (1101) and the upper shell (201) Between formed accommodation space (106)；
Connector pipeline (102), the connector pipeline (102) are in fluid communication with the lower vessel (216)；
Wherein, the pressure sensor (1100) has length (L) and height (H), and the connector pipeline (102) is along the pressure The direction of the length (L) of force snesor (1100) extends；And
Wherein, the lid (1101) has extension (1108), the extension in the side that the connector pipeline (102) extends There is extending space (1109), the extending space (1109) to connect with the accommodation space (106) connection in portion (1108).
12. pressure sensor (1100) as claimed in claim 11, it is characterised in that further include：
One printed circuit board (1410), the printed circuit board (1410) along the pressure sensor (1100) the length The direction for spending (L) is placed, and a part for the printed circuit board (1410) is mounted in the accommodation space (106), another portion Divide and extends in the extending space (1109).
13. pressure sensor (1100) as claimed in claim 12, it is characterised in that further include：
Coil (251), the coil are fixed on the upper shell (201), and the both ends of the coil (251) are connected directly to The printed circuit board (1410).
14. pressure sensor (1100) as claimed in claim 12, it is characterised in that：
At least a piece of chip (703) is installed on the printed circuit board (1410).
15. pressure sensor (1100) as claimed in claim 12, it is characterised in that：
At least one capacitance (630) is installed on the printed circuit board (1410).
16. pressure sensor (1100) as claimed in claim 11, it is characterised in that：
The end (1107) of the extension (1108) is generally aligned or prolongs with the end (1103) of the connector pipeline (102) Stretch the end (1103) only slight beyond the connector pipeline (102).
17. pressure sensor (1100) as claimed in claim 12, it is characterised in that：
Plug (480), the plug (480) and the printed circuit board (1410) can be accommodated in the extending space (1109) On element electric appliance connection.
18. pressure sensor (1100) as claimed in claim 11, it is characterised in that：
The lower housing (1202) is equipped with lower snap fastener (1282), and the extension (1108) of the lid (1101) is equipped with With the upper snap fastener of lower snap fastener (1282) cooperation.
19. pressure sensor (1100) as claimed in claim 11, it is characterised in that：
There are two opposite planes (1112,1114) for the extension (1108) tool of the lid (1101), described two opposite Plane (1112,1114) be substantially parallel to the pressure sensor (1100) the height (H) direction, can be used in Positioning when pressure sensor (1100) installation.
20. pressure sensor (1100) as claimed in claim 11, it is characterised in that：
The lid (1101) is integrally formed.
CN201721737357.3U 2016-12-30 2017-12-13 Pressure sensor Active CN208076082U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108267257A (en) * 2016-12-30 2018-07-10 伊利诺斯工具制品有限公司 Pressure sensor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111649862A (en) 2019-03-04 2020-09-11 伊利诺斯工具制品有限公司 Pressure sensor
EP3935362A1 (en) * 2019-03-04 2022-01-12 Illinois Tool Works Inc. Pressure sensor
CN112710285B (en) * 2020-12-17 2022-04-05 浙江大学 Deep sea temperature and deep salt measuring instrument with self-energy supply

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3044686U (en) 1997-06-23 1998-01-06 テクノエクセル株式会社 Water level detector
JP3671689B2 (en) 1998-08-31 2005-07-13 株式会社日立製作所 Pressure detection device
JP3484981B2 (en) 1998-07-03 2004-01-06 株式会社日立製作所 Pressure detector
JP2000019048A (en) * 1998-08-31 2000-01-21 Hitachi Ltd Pressure-detecting device
IT1392256B1 (en) * 2008-12-05 2012-02-22 Illinois Tool Works PRESSURE SENSOR MODIFIED TO DETECT OPERATIONAL PARAMETERS OF A APPLIANCE EQUIPPED WITH A RELATIVELY MOBILE COMPONENT
JP5601583B2 (en) 2010-11-24 2014-10-08 株式会社亀屋工業所 Water level sensor
CN104977117B (en) * 2014-04-04 2019-11-01 伊利诺斯工具制品有限公司 Wind pressure or air velocity transducer and the blower for using the wind pressure or air velocity transducer
WO2015160408A1 (en) * 2014-04-14 2015-10-22 Illinois Tool Works Inc. Pressure sensor with incorporated air trap
CN206208435U (en) * 2014-10-11 2017-05-31 伊利诺斯工具制品有限公司 Pressure sensor
US10400906B2 (en) * 2015-06-25 2019-09-03 Illinois Tool Works Inc. Piezo actuator type valve
CN208076082U (en) * 2016-12-30 2018-11-09 伊利诺斯工具制品有限公司 Pressure sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108267257A (en) * 2016-12-30 2018-07-10 伊利诺斯工具制品有限公司 Pressure sensor

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CN108267257A (en) 2018-07-10
KR20180079196A (en) 2018-07-10

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